mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
080a71e8e9
Add option to choose between current 24-error correction and 32-error correction through Kconfig. 32-error correction allow to use NAND chips which require up to 8-bit error correction per 512 byte (when using 2K pages). Signed-off-by: Stefan Agner <stefan@agner.ch>
90 lines
2.9 KiB
Text
90 lines
2.9 KiB
Text
menu "NAND Device Support"
|
|
|
|
config SYS_NAND_SELF_INIT
|
|
bool
|
|
help
|
|
This option, if enabled, provides more flexible and linux-like
|
|
NAND initialization process.
|
|
|
|
config NAND_DENALI
|
|
bool "Support Denali NAND controller"
|
|
select SYS_NAND_SELF_INIT
|
|
help
|
|
Enable support for the Denali NAND controller.
|
|
|
|
config SYS_NAND_DENALI_64BIT
|
|
bool "Use 64-bit variant of Denali NAND controller"
|
|
depends on NAND_DENALI
|
|
help
|
|
The Denali NAND controller IP has some variations in terms of
|
|
the bus interface. The DMA setup sequence is completely differenct
|
|
between 32bit / 64bit AXI bus variants.
|
|
|
|
If your Denali NAND controller is the 64-bit variant, say Y.
|
|
Otherwise (32 bit), say N.
|
|
|
|
config NAND_DENALI_SPARE_AREA_SKIP_BYTES
|
|
int "Number of bytes skipped in OOB area"
|
|
depends on NAND_DENALI
|
|
range 0 63
|
|
help
|
|
This option specifies the number of bytes to skip from the beginning
|
|
of OOB area before last ECC sector data starts. This is potentially
|
|
used to preserve the bad block marker in the OOB area.
|
|
|
|
config NAND_VF610_NFC
|
|
bool "Support for Freescale NFC for VF610/MPC5125"
|
|
select SYS_NAND_SELF_INIT
|
|
help
|
|
Enables support for NAND Flash Controller on some Freescale
|
|
processors like the VF610, MPC5125, MCF54418 or Kinetis K70.
|
|
The driver supports a maximum 2k page size. The driver
|
|
currently does not support hardware ECC.
|
|
|
|
choice
|
|
prompt "Hardware ECC strength"
|
|
depends on NAND_VF610_NFC
|
|
default SYS_NAND_VF610_NFC_45_ECC_BYTES
|
|
help
|
|
Select the ECC strength used in the hardware BCH ECC block.
|
|
|
|
config SYS_NAND_VF610_NFC_45_ECC_BYTES
|
|
bool "24-error correction (45 ECC bytes)"
|
|
|
|
config SYS_NAND_VF610_NFC_60_ECC_BYTES
|
|
bool "32-error correction (60 ECC bytes)"
|
|
|
|
endchoice
|
|
|
|
comment "Generic NAND options"
|
|
|
|
# Enhance depends when converting drivers to Kconfig which use this config
|
|
# option (mxc_nand, ndfc, omap_gpmc).
|
|
config SYS_NAND_BUSWIDTH_16BIT
|
|
bool "Use 16-bit NAND interface"
|
|
depends on NAND_VF610_NFC
|
|
help
|
|
Indicates that NAND device has 16-bit wide data-bus. In absence of this
|
|
config, bus-width of NAND device is assumed to be either 8-bit and later
|
|
determined by reading ONFI params.
|
|
Above config is useful when NAND device's bus-width information cannot
|
|
be determined from on-chip ONFI params, like in following scenarios:
|
|
- SPL boot does not support reading of ONFI parameters. This is done to
|
|
keep SPL code foot-print small.
|
|
- In current U-Boot flow using nand_init(), driver initialization
|
|
happens in board_nand_init() which is called before any device probe
|
|
(nand_scan_ident + nand_scan_tail), thus device's ONFI parameters are
|
|
not available while configuring controller. So a static CONFIG_NAND_xx
|
|
is needed to know the device's bus-width in advance.
|
|
|
|
if SPL
|
|
|
|
config SPL_NAND_DENALI
|
|
bool "Support Denali NAND controller for SPL"
|
|
help
|
|
This is a small implementation of the Denali NAND controller
|
|
for use on SPL.
|
|
|
|
endif
|
|
|
|
endmenu
|